基于修正线路介数中心度的公交骨干线提取方法

The Bus Main Line extraction Method based on Modified Line Betweenness Centrality

摘要:

以复杂网络理论为基础，运用ArcGIS二次开发程序和Ucinet软件进行公交GIS网络分析，提出修正的线路介数中心度指标作为筛选公交骨干线路的新方法。以上海市浦东新区常规公交线网为例，将应用修正线路介数中心度筛选的公交骨干线方案与浦东新区公交骨干线实际规划方案从网络重合度、公交线路非直线系数、站间距、客流稳定性等方面进行差异性分析，说明新方法的合理性与科学性。结合公交骨干线网规划编制时面临的3种情况，讨论了新规划方法的适应性，提出约骨干公交线网方案中65%的线路可按照新方法进行提取。新方法基于GIS（地理信息系统）模型进行网络数据提取具有实用性和通用性，能够作为公交骨干线规划的有效量化方法。

Abstract:

Based on the theory of complex network, the paper uses ArcGIS second development program and Ucinet software for transit GIS network analysis, and proposes a new planning method to filter out bus main lines with a modified line betweenness centrality index. Taking the bus network of Pudong New District in Shanghai as an example, the paper further conducts a different analysis between the new method and the actual planning scenario, and illustrates the feasibility and rationality of the new method from the aspects of 4 indicators, including the coincidence degree of the network, non-linear coefficient, station spacing, and passenger flow stability. According to three cases in the process of bus main lines planning, the paper discusses the adaptability of the new method and concludes that about 65% of the bus main lines in planning scenario can be extracted by this new method. The new method is practical and universal because of the advanced data extraction based on GIS model of network，which can be widely-used as an efficient quantitative method in the bus main line planning.